AwsOnchange
v 1.0 - November 2010 Add-on to use check easily change on some model, and running action
see wiki for more detailled information : wiki.github.com/supernini/aws_onchange/
Example
#each time, field1 and field3 are change or created, update_action is called class MyModels < ActiveRecord::Base
aws_onchange :checked_field => [:field1, :field3], :method => :update_action, :oncreate => true
def update_action
#action to do
end
end